87171-56-0Relevant academic research and scientific papers
Novel cytocidal compounds, oxopropalines from Streptomyces sp. G324 producing lavendamycin. II. Physico-chemical properties and structure elucidations
Abe,Enoki,Nakakita,Uchida,Nakamura,Munekata
, p. 1678 - 1686 (1993)
Novel cytocidal compounds designated oxopropalines A, B, D, E and G were isolated from the fermentation of an actinomycete named Streptomyces sp. G324, a strain that also produced an antitumor antibiotic, lavendamycin. All these compounds possessed a β-carboline chromophore. The structures of the oxopropalines were elucidated by several NMR spectral analyses and other spectroscopic experiments.
CHARACTERIZATION OF METHYL GLYCOSIDES AT THE PICO- TO NANO-GRAM LEVEL
Golik, Jerzy,Liu, Hung-Wen,Dinovi, Michael,Furukawa, Jun,Nakanishi, Koji
, p. 135 - 146 (2007/10/02)
We describe a general method that permits characterization of 100-pg to 1-ng quantities of sugars.Thus, oligosaccharides are subjected to methanolysis, followed by per-p-bromobenzoylation or pernaphthoylation, and the methyl glycoside peresters are separated by high-pressure liquid chromatography.The method is also applicable to amino and acetamido sugars.If required, the separated sugar derivatives may be unequivocally identified by the characteristic quasi-M+ peaks of bromobenzoates and extrema of excitation-split circular-dichroism (c.d.) curves.Furthermore, as the c.d. extrema of polybenzoates are predictable from extrema of component dibenzoate units, the c.d. data yield information on the unknown spatial disposition of -OH, -NH2, and -NHAc groups of glycopyranoses.Application of the method is demonstrated with viridopentaose C, a pentasaccharide obtained from the antibiotic sporaviridin.
